Bug 321748

Application: plasma-desktop (4.10.4)
KDE Platform Version: 4.10.4
Qt Version: 4.8.4
Operating System: Linux 3.8.0-26-generic i686
Distribution: Ubuntu 13.04

-- Information about the crash:
- What I was doing when the application crashed: I right-clicked on the icon and chose Kmix "Set the sound system." Under "Sound Playback" selected "Music" and pressed the "Test". Then dropped Plasma.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Оболочка Plasma (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xb1141740 (LWP 2700))]

Thread 5 (Thread 0xac160b40 (LWP 3080)):
#0  0xb777e424 in __kernel_vsyscall ()
#1  0xb1ffb84b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0xb7635d7c in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0xb2ff70ad in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0xb2ff70df in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0xb1ff7d78 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0xb76283de in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 4 (Thread 0xa55ceb40 (LWP 3136)):
#0  0xb777e424 in __kernel_vsyscall ()
#1  0xb7618dcb in poll () from /lib/i386-linux-gnu/libc.so.6
#2  0xb1ef72db in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb1ee86d0 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb1ee8831 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb6023c3f in QEventDispatcherGlib::processEvents (this=0xa4c00468, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0xb5ff03ec in QEventLoop::processEvents (this=this@entry=0xa55ce228, flags=...) at kernel/qeventloop.cpp:149
#7  0xb5ff06e1 in QEventLoop::exec (this=this@entry=0xa55ce228, flags=...) at kernel/qeventloop.cpp:204
#8  0xb5edbfec in QThread::exec (this=this@entry=0xa974b78) at thread/qthread.cpp:542
#9  0xb5fcff2d in QInotifyFileSystemWatcherEngine::run (this=0xa974b78) at io/qfilesystemwatcher_inotify.cpp:256
#10 0xb5edeb18 in QThreadPrivate::start (arg=0xa974b78) at thread/qthread_unix.cpp:338
#11 0xb1ff7d78 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0xb76283de in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 3 (Thread 0xa30ffb40 (LWP 3139)):
#0  0xb777e424 in __kernel_vsyscall ()
#1  0xb763b8e2 in clock_gettime () from /lib/i386-linux-gnu/libc.so.6
#2  0xb5f3d0d5 in do_gettime (frac=0xa30fef60, sec=0xa30fef58) at tools/qelapsedtimer_unix.cpp:123
#3  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#4  0xb602480e in QTimerInfoList::updateCurrentTime (this=this@entry=0xa3202074) at kernel/qeventdispatcher_unix.cpp:354
#5  0xb6024b9a in QTimerInfoList::timerWait (this=0xa3202074, tm=...) at kernel/qeventdispatcher_unix.cpp:461
#6  0xb6023373 in timerSourcePrepareHelper (src=<optimized out>, timeout=0xa30ff08c) at kernel/qeventdispatcher_glib.cpp:136
#7  0xb602340d in timerSourcePrepare (source=0xa3202040, timeout=0xa30ff08c) at kernel/qeventdispatcher_glib.cpp:169
#8  0xb1ee7d21 in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0xb1ee85cf in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb1ee8831 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#11 0xb6023c3f in QEventDispatcherGlib::processEvents (this=0xa3200468, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#12 0xb5ff03ec in QEventLoop::processEvents (this=this@entry=0xa30ff228, flags=...) at kernel/qeventloop.cpp:149
#13 0xb5ff06e1 in QEventLoop::exec (this=this@entry=0xa30ff228, flags=...) at kernel/qeventloop.cpp:204
#14 0xb5edbfec in QThread::exec (this=this@entry=0xac24818) at thread/qthread.cpp:542
#15 0xb5fcff2d in QInotifyFileSystemWatcherEngine::run (this=0xac24818) at io/qfilesystemwatcher_inotify.cpp:256
#16 0xb5edeb18 in QThreadPrivate::start (arg=0xac24818) at thread/qthread_unix.cpp:338
#17 0xb1ff7d78 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#18 0xb76283de in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 2 (Thread 0x9bf00b40 (LWP 3247)):
#0  0xb1ee57b9 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb1ee80a5 in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb1ee8662 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb1ee8831 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb6023c3f in QEventDispatcherGlib::processEvents (this=0xb4a9398, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0xb5ff03ec in QEventLoop::processEvents (this=this@entry=0x9bf00238, flags=...) at kernel/qeventloop.cpp:149
#6  0xb5ff06e1 in QEventLoop::exec (this=this@entry=0x9bf00238, flags=...) at kernel/qeventloop.cpp:204
#7  0xb5edbfec in QThread::exec (this=0xb4a4220) at thread/qthread.cpp:542
#8  0x9e41d402 in KCupsConnection::run() () from /usr/lib/libkcupslib.so
#9  0xb5edeb18 in QThreadPrivate::start (arg=0xb4a4220) at thread/qthread_unix.cpp:338
#10 0xb1ff7d78 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#11 0xb76283de in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 1 (Thread 0xb1141740 (LWP 2700)):
[KCrash Handler]
#7  0xb615d460 in QMapData::shared_null () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#8  0xad569cac in meth_Plasma_DataEngine_sources (sipSelf=0xa932a04, sipArgs=0xae13802c) at sip/plasma/sipplasmapart5.cpp:19548
#9  0xae2821ed in PyCFunction_Call (func=func@entry=0xa89c3cc, arg=arg@entry=0xae13802c, kw=kw@entry=0x0) at ../Objects/methodobject.c:81
#10 0xae1fae4f in call_function (oparg=<optimized out>, pp_stack=0xbffefc84) at ../Python/ceval.c:4021
#11 PyEval_EvalFrameEx (f=f@entry=0xbf19974, throwflag=throwflag@entry=0) at ../Python/ceval.c:2666
#12 0xae1fa7ef in fast_function (nk=167398216, na=2, n=2, pp_stack=0xbffefdf4, func=0xa76425c) at ../Python/ceval.c:4107
#13 call_function (oparg=<optimized out>, pp_stack=0xbffefdf4) at ../Python/ceval.c:4042
#14 PyEval_EvalFrameEx (f=f@entry=0xbf42fec, throwflag=throwflag@entry=0) at ../Python/ceval.c:2666
#15 0xae23310a in PyEval_EvalCodeEx (co=co@entry=0xa662f50, globals=globals@entry=0xa66c24c, locals=locals@entry=0x0, args=0xbf15c1c, argcount=argcount@entry=3, kws=0xbf15c28, kwcount=0, defs=0xa78f818, defcount=defcount@entry=1, closure=0x0) at ../Python/ceval.c:3253
#16 0xae1f9d89 in fast_function (nk=<optimized out>, na=3, n=<optimized out>, pp_stack=0xbffeffd4, func=0xa75da3c) at ../Python/ceval.c:4117
#17 call_function (oparg=<optimized out>, pp_stack=0xbffeffd4) at ../Python/ceval.c:4042
#18 PyEval_EvalFrameEx (f=f@entry=0xbf15acc, throwflag=throwflag@entry=0) at ../Python/ceval.c:2666
#19 0xae23310a in PyEval_EvalCodeEx (co=co@entry=0xa78c650, globals=globals@entry=0xa7743e4, locals=locals@entry=0x0, args=0xa998ce8, argcount=argcount@entry=2, kws=0xa998cf0, kwcount=0, defs=0xa7f5118, defcount=defcount@entry=1, closure=0x0) at ../Python/ceval.c:3253
#20 0xae1f9d89 in fast_function (nk=<optimized out>, na=2, n=<optimized out>, pp_stack=0xbfff01b4, func=0xa81010c) at ../Python/ceval.c:4117
#21 call_function (oparg=<optimized out>, pp_stack=0xbfff01b4) at ../Python/ceval.c:4042
#22 PyEval_EvalFrameEx (f=f@entry=0xa998b94, throwflag=throwflag@entry=0) at ../Python/ceval.c:2666
#23 0xae23310a in PyEval_EvalCodeEx (co=0xa7815c0, globals=0xa7743e4, locals=locals@entry=0x0, args=args@entry=0xa8ba428, argcount=7, kws=kws@entry=0x0, kwcount=kwcount@entry=0, defs=defs@entry=0x0, defcount=defcount@entry=0, closure=0x0) at ../Python/ceval.c:3253
#24 0xae233290 in function_call.15562 (func=0xa7dfe2c, arg=0xa8ba41c, kw=0x0) at ../Objects/funcobject.c:526
#25 0xae27f2e0 in PyObject_Call (func=func@entry=0xa7dfe2c, arg=arg@entry=0xa8ba41c, kw=kw@entry=0x0) at ../Objects/abstract.c:2529
#26 0xae200da1 in instancemethod_call.8820 (func=0xa7dfe2c, arg=0xa8ba41c, kw=0x0) at ../Objects/classobject.c:2602
#27 0xae27f2e0 in PyObject_Call (func=func@entry=0xa95d7fc, arg=arg@entry=0xa94be3c, kw=kw@entry=0x0) at ../Objects/abstract.c:2529
#28 0xae27fd1b in PyEval_CallObjectWithKeywords (func=func@entry=0xa95d7fc, arg=arg@entry=0xa94be3c, kw=kw@entry=0x0) at ../Python/ceval.c:3890
#29 0xae258480 in PyInstance_New (klass=0xa7e53ec, arg=0xa94be3c, kw=0x0) at ../Objects/classobject.c:581
#30 0xae27f2e0 in PyObject_Call (func=func@entry=0xa7e53ec, arg=arg@entry=0xa94be3c, kw=kw@entry=0x0) at ../Objects/abstract.c:2529
#31 0xae1f6fd8 in do_call (nk=<optimized out>, na=6, pp_stack=0xbfff0754, func=0xa7e53ec) at ../Python/ceval.c:4239
#32 call_function (oparg=<optimized out>, pp_stack=0xbfff0754) at ../Python/ceval.c:4044
#33 PyEval_EvalFrameEx (f=f@entry=0xbcd1144, throwflag=throwflag@entry=0) at ../Python/ceval.c:2666
#34 0xae23310a in PyEval_EvalCodeEx (co=0xa77b530, globals=0xa791e84, locals=locals@entry=0x0, args=args@entry=0xa93cba8, argcount=6, kws=kws@entry=0xae138038, kwcount=kwcount@entry=0, defs=defs@entry=0x0, defcount=defcount@entry=0, closure=0x0) at ../Python/ceval.c:3253
#35 0xae233388 in function_call.15562 (func=0xa732a3c, arg=0xa93cb9c, kw=0xa9384f4) at ../Objects/funcobject.c:526
#36 0xae27f2e0 in PyObject_Call (func=func@entry=0xa732a3c, arg=arg@entry=0xa93cb9c, kw=kw@entry=0xa9384f4) at ../Objects/abstract.c:2529
#37 0xae1f6b8e in ext_do_call (nk=177458076, na=177519660, flags=<optimized out>, pp_stack=0xbfff09e4, func=0xa732a3c) at ../Python/ceval.c:4334
#38 PyEval_EvalFrameEx (f=f@entry=0xad04cec, throwflag=throwflag@entry=0) at ../Python/ceval.c:2705
#39 0xae1fa7ef in fast_function (nk=167398216, na=2, n=2, pp_stack=0xbfff0b54, func=0xa6eb56c) at ../Python/ceval.c:4107
#40 call_function (oparg=<optimized out>, pp_stack=0xbfff0b54) at ../Python/ceval.c:4042
#41 PyEval_EvalFrameEx (f=f@entry=0xb12a55c, throwflag=throwflag@entry=0) at ../Python/ceval.c:2666
#42 0xae23310a in PyEval_EvalCodeEx (co=0xa6d73c8, globals=0xa6e1934, locals=locals@entry=0x0, args=args@entry=0xae0c0898, argcount=2, kws=kws@entry=0x0, kwcount=kwcount@entry=0, defs=defs@entry=0x0, defcount=defcount@entry=0, closure=0x0) at ../Python/ceval.c:3253
#43 0xae233290 in function_call.15562 (func=0xa6eb764, arg=0xae0c088c, kw=0x0) at ../Objects/funcobject.c:526
#44 0xae27f2e0 in PyObject_Call (func=func@entry=0xa6eb764, arg=arg@entry=0xae0c088c, kw=kw@entry=0x0) at ../Objects/abstract.c:2529
#45 0xae200da1 in instancemethod_call.8820 (func=0xa6eb764, arg=0xae0c088c, kw=0x0) at ../Objects/classobject.c:2602
#46 0xae27f2e0 in PyObject_Call (func=func@entry=0xa6f2f2c, arg=arg@entry=0xae0c088c, kw=kw@entry=0x0) at ../Objects/abstract.c:2529
#47 0xae2b3a42 in PyObject_CallFunctionObjArgs (callable=callable@entry=0xa6f2f2c) at ../Objects/abstract.c:2760
#48 0xa58788be in DBusPyConnection_HandleMessage (conn=conn@entry=0xa8a6d7c, msg=msg@entry=0xa946930, callable=callable@entry=0xa6f2f2c) at ../../_dbus_bindings/conn.c:79
#49 0xa5879527 in _filter_message (conn=0xa8ca6f0, message=0xbcbfbe0, user_data=0xa6f2f2c) at ../../_dbus_bindings/conn-methods.c:199
#50 0xb1faf481 in dbus_connection_dispatch () from /lib/i386-linux-gnu/libdbus-1.so.3
#51 0xaaf42b6a in ?? () from /usr/lib/python2.7/dist-packages/dbus/mainloop/qt.so
#52 0xaaf42ef7 in ?? () from /usr/lib/python2.7/dist-packages/dbus/mainloop/qt.so
#53 0xaaf43c72 in ?? () from /usr/lib/python2.7/dist-packages/dbus/mainloop/qt.so
#54 0xb6007b56 in QMetaObject::activate (sender=sender@entry=0xa8cb408, m=m@entry=0xb615c458 <QSocketNotifier::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0xbfff11b8) at kernel/qobject.cpp:3539
#55 0xb605ad05 in QSocketNotifier::activated (this=this@entry=0xa8cb408, _t1=12) at .moc/release-shared/moc_qsocketnotifier.cpp:103
#56 0xb6010cff in QSocketNotifier::event (this=0xa8cb408, e=0xbfff15e4) at kernel/qsocketnotifier.cpp:317
#57 0xb54dfc7c in QApplicationPrivate::notify_helper (this=0x9db9a50, receiver=0xa8cb408, e=0xbfff15e4) at kernel/qapplication.cpp:4567
#58 0xb54e2b94 in QApplication::notify (this=0xbfff15e4, receiver=0xa8cb408, e=0xbfff15e4) at kernel/qapplication.cpp:3949
#59 0xb668bd01 in KApplication::notify (this=0x9da0c10, receiver=0xa8cb408, event=0xbfff15e4) at ../../kdeui/kernel/kapplication.cpp:311
#60 0xb5ff190e in QCoreApplication::notifyInternal (this=0x9da0c10, receiver=0xa8cb408, event=event@entry=0xbfff15e4) at kernel/qcoreapplication.cpp:946
#61 0xb60242d8 in sendEvent (event=0xbfff15e4, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#62 socketNotifierSourceDispatch (source=0x9db9b90) at kernel/qeventdispatcher_glib.cpp:110
#63 0xb1ee83b3 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#64 0xb1ee8750 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#65 0xb1ee8831 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#66 0xb6023c3f in QEventDispatcherGlib::processEvents (this=this@entry=0x9d55eb8, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#67 0xb5596a0a in QGuiEventDispatcherGlib::processEvents (this=0x9d55eb8, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#68 0xb5ff03ec in QEventLoop::processEvents (this=this@entry=0xbfff1828, flags=...) at kernel/qeventloop.cpp:149
#69 0xb5ff06e1 in QEventLoop::exec (this=this@entry=0xbfff1828, flags=...) at kernel/qeventloop.cpp:204
#70 0xb5ff63fa in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#71 0xb54ddfc4 in QApplication::exec () at kernel/qapplication.cpp:3828
#72 0xb7737e32 in kdemain (argc=1, argv=0xbfff19e4) at ../../../../plasma/desktop/shell/main.cpp:126
#73 0x0804855b in main (argc=1, argv=0xbfff19e4) at plasma-desktop_dummy.cpp:3

Possible duplicates by query: bug 316906, bug 311951.

Reported using DrKonqi